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We must try our best to stop the pollution ________ a better world.

[　　]

The doctor ________ is leaving for Africa next week.

[　　]

A．the nurse is talking to him

B．whom the nurse is talking

C．the nurse is talking to

D．to the nurse is talking

________ you ever ________ the Great Wall?

[　　]

The stuff used ________ trash.

[　　]

The boy ________ to get supper ready after school.

[　　]

Stop cutting trees, ________ the earth will become worse and worse.

[　　]

The ________ trees, the ________.

[　　]

Jim thinks zoos are terrible places for animals to live in, so he ________ building a new zoo.

[　　]

－How do you like Hangzhou, Mr Black?

－Oh, I ________ such a beautiful city.

[　　]

________ of us enjoy the work, and the work is ________ finished. We are ________ students.

[　　]

A．Most, mostly, almost

B．Most, most, almost

C．Most, almost, mostly

D．Mostly, almost, most